Wild Margaret A, Shenk Tanya M, Spraker Terry R
Colorado Division of Wildlife, Wildlife Research Section, 317 W. Prospect Rd, Fort Collins, Colorado 80526, USA.
J Wildl Dis. 2006 Jul;42(3):646-50. doi: 10.7589/0090-3558-42.3.646.
As part of a species recovery program, 129 Canada lynx (Lynx canadensis) originating from British Columbia, the Yukon, Manitoba, and Quebec, Canada, and Alaska, USA, were reintroduced to southwestern Colorado, USA, from 1999 to 2003. Of 52 lynx mortalities documented by October 2003, six lynx, including a female and her 5-mo-old kitten, had evidence of Yersinia pestis infection as determined by fluorescent antibody test and/or culture. Postmortem findings in these lynx were characterized by pneumonia, ranging from acute suppurative pneumonia, to multifocal necrotizing pneumonia, to fibrinous bronchopneumonia. Histopathologic examination of lung revealed multiple areas of inflammation and consolidation, areas of edema and hemorrhage, and bacteria surrounded by extensive inflammation. Spleens had severe lymphoid depletion and hypocellular red pulp. Lymphadenomegaly was observed in only one plague-affected lynx. We hypothesize that these Canada lynx were exposed to Y. pestis by infected prey, and these are the first reports of plague in this species.
作为物种恢复计划的一部分，1999年至2003年期间，来自加拿大不列颠哥伦比亚省、育空地区、马尼托巴省、魁北克省以及美国阿拉斯加的129只加拿大猞猁（Lynx canadensis）被重新引入美国科罗拉多州西南部。到2003年10月记录的52只猞猁死亡案例中，有6只猞猁，包括一只雌性及其5个月大的幼崽，经荧光抗体检测和/或培养确定有鼠疫耶尔森菌感染迹象。这些猞猁的尸检结果以肺炎为特征，从急性化脓性肺炎到多灶性坏死性肺炎，再到纤维素性支气管肺炎。肺部组织病理学检查显示有多个炎症和实变区域、水肿和出血区域，以及被广泛炎症包围的细菌。脾脏有严重的淋巴细胞耗竭和细胞减少的红髓。仅在一只受鼠疫影响的猞猁中观察到淋巴结肿大。我们推测这些加拿大猞猁是通过感染的猎物接触到鼠疫耶尔森菌的，这些是该物种中鼠疫的首次报告。
